Big bath/hot tub - Structual considerations
- Thread starter Monsoon
- Start date
It's going in a 1st first floor flat on a suspended timber floor.
The inside dimension of the flat wall to wall is 6.5m X 7.5m
The timber joists are supported in the middle by an RSJ which spans 6.5m. The RSJ is fixed into the external walls either side, onto what I believe are described as 'pad stones'.
No additional support is provided to the floor in the form of walls or posts from ground level
The bath would be located almost directly over the RSJ at one end. I wall planning on overlaying the floor boards in that area and putting down 25mm WPB ply.
I remember reading some where that although these hot tubs are heavy crucially the weight is distributed so does not present a problem
The inside dimension of the flat wall to wall is 6.5m X 7.5m
The timber joists are supported in the middle by an RSJ which spans 6.5m. The RSJ is fixed into the external walls either side, onto what I believe are described as 'pad stones'.
No additional support is provided to the floor in the form of walls or posts from ground level
The bath would be located almost directly over the RSJ at one end. I wall planning on overlaying the floor boards in that area and putting down 25mm WPB ply.
I remember reading some where that although these hot tubs are heavy crucially the weight is distributed so does not present a problem
Water weighs .......1000 kg per cubic metre.
Assuming your dimensions are internal...1.8 x 1.8 x .6 = 1.944 cubic metres.
Thus the water would weigh ...1944 kg....if full.....Nearly 2.0 tonnes...
Obviously your internal dimensions would be smaller than this, thus you could calculate the weight of water as above, once you know the internal dimensions. Don,t forget to add the weight of the unit. Plus the weight of two people....
I would get expert advice on the load bearing capability of your floor before proceeding....
Assuming your dimensions are internal...1.8 x 1.8 x .6 = 1.944 cubic metres.
Thus the water would weigh ...1944 kg....if full.....Nearly 2.0 tonnes...
Obviously your internal dimensions would be smaller than this, thus you could calculate the weight of water as above, once you know the internal dimensions. Don,t forget to add the weight of the unit. Plus the weight of two people....
I would get expert advice on the load bearing capability of your floor before proceeding....
Dry weight = 110kg approx
Operating capacity = 600 litres (It's a round bowl shape)
Not sure of the additional weight for occupants taking into account that water will also get displaced by the addition of bodies
either way Im pretty sure it will not break the 1 tonne mark
Operating capacity = 600 litres (It's a round bowl shape)
Not sure of the additional weight for occupants taking into account that water will also get displaced by the addition of bodies
either way Im pretty sure it will not break the 1 tonne mark
Do the calculations based on it being filled to the lip - one day someone will!
And the water displaced does not disapear, it will still be on the floor.
And the water displaced does not disapear, it will still be on the floor.
Sorry, you will need a structural engineer, I was assuming the hot tub was going in the gardenMonsoon said:
How are you going to get the hot tub on the 1st floor
What is on the ground floor flat
What about the water tipping over the side
I have the same size hot tub as you and the total weight with water is 1630kg (3594 lbs) then you must add the average weight of 4 adults weighing 175 lbs. each.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
